Lock.



H. G. VOIGHT.

LOCK. APPLICATION FILED DEC. I0. ISIS.

I WYA III I IIII II.

H. G. VOIGHT.

.L0cK.

m APPLICATION FILED DEC. 10, IBIS.

Patented June 25, 1918.

6 SHEETS-SHEET 2.

H.. G. VOIGHT.

. LOCK.

lTUA.

APPLICATION FILED DEC. I0. ISIS- Patented June 25, 1918. 26sH'EETs`sHEET 3.

I .F3 /42 /l `9 5a l i Tn A @al |h. 73 v v 7J 70 C I" 55 Il 6.9 55 l. zI 75 I I; m y 75 j 74 III O D/ 1I E 414 I "n" A 1; IlI E 45 .gfrT-g E2-:f 25 sa I xm/H E I IIIIIII H. G. VOIGHT.

LOCK.

- APPLICATION FILED DEC. l0. |915.

Patented June 25., 1918.

6 SHEETS-SHEET 4.

" i'm www IITNESSL S @TQ/Mm H. G. VOGHT.

LOCK.

APPLICATION FILED 050.10. 1915.

Patented June 25, 1918.

6 SHEETS-SHEET 5.

H. G.- voisin.

LOCK.

APPLICATION FlLED DEC. l0, 1915- Patented June 25, 1918.

6 SHEETS-SHEET 6. l

IVTNESSES.' @TQ/Mm ir an eine as 1:1

HENRY G. VOIGIIT, OF NEW` BRITAIN, CONNECTICUT, .Ai-ESIGNOR TO SARGENT &COIVI PANY, F NEW HAVEN, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

To all whom it may concern.'

Bc it known that I, HENRY Gr. Voici-rr, a citizen of the United States,residing in New Britain, county of Hartford, and State of Connecticut,have-invented certain .new and useful Improvements in Locks, of whichthe following is a full, clear and eXact description.

This invention relates to locks, and more particularly to corridor locksof hotels, although'the invention is applicable to locks of other types.llfIotel locks are usually provided with a series of keys, including anemergency key and a display key as well as a change or guest key. Whenasalesman stopping at a hotel has valuable goods stored in his room andwishes to have them securely locked up during the time that he is awayfrom his room, he usually asks the hotel clerk to have the room doorlocked by the displaykey,- which acts as a shut-out device forpreventing operation of the lock by the inaids key, a duplicate changekey, or other' keys of low order, although the door can still be openedby the emergency key in the hands of the manager. The display key isthen given to the bell-boy, and the salesman often goes back to the roomwith the bell-boy in order to make sure that the door is locked by thedisplay key.

In this way a good deal of trouble is occasioned and considerable timeislost.

@ne of the primary objects of my present invention is to provide alockwith ashut-out device having a function equivalent to the display key,which shut-out device may be electrically operated from the oliice ofthe hotel to lockV the door against opening by any key except theemergency key. In order to lock the door of any given room against thechange and maids keys, it is merely necessary to press a button in theoiiice, and therefore the trip of the bell-boy to and from the room witha display key is entirely obviated.

Janother object of the invention isto provide an electrical shut-outdevice which is combined in a novel manner with the mechanism actuatedby "the emergency key so that the door may be very readily opened by thelatter key after the shut-out mechanism has been actuated to lock thedoor against the other keys.

It is also proposed to furnish an electrically operated shut-out devicewhich, while Specification of Letters Patent. lPgmtnteajll June 25,191%.. Agpneation med December 10,1915. serial No. 66,104.

having the functions stated, will not prevent the room door from beingopened from the inside, under all circumstances, because it is obviouslyimportant to provide free egress from a hotel room at all times.

To these and other ends, the inventionl consists in the novel featuresand combina` tions of parts to be hereinafter described and claimed.

In the accompanying drawings,

Figure l is a fragmentary outside elevation of a door and door casingequipped with my improvements, the door being locked from the outside,but releasable by the change or guest key and the other keys of loworder;

Fig. 2 is a vertical section of the lock mechanism, with the parts inthe positions shown in Fig. 1, said section being taken on line 2-2 ofFig.- 3;

Fig. 3 is a section on line 3-3 of Figi;

Fig. l is a fragmentary view similar to Fig. 2, showing the shut-outmechanism actuated to prevent the operation of the change key and theother keys acting on the 'latch bolt;

Fig. 5 is a horizontal section of the parts shown in Fig. 4;

Fig. G is a view similar to Fig. 5, showing the door released by theemergency key;

Fig. 7 is a view of the door casing, with certain parts broken away toshow the electromagnet which controls the shut-out plunger' Fig. 8 is adetail of the look on 4the door frame actuated by the emergency key`torelease the door;

Fig. 9 comprises detail views ofthe controller bolt;

Fig. l() comprises detail views of the latch bolt; and y Fig. 1lcomprises detail views of the guest and the emergency keys.

In the particular embodiment of my invention which I have selected forillustration, the door is provided with a mortise lock of the latch bolttype having a fixed outer knob, and mechanism for retracting the latchbolt from` the outside by l one or more keys of a suitable pin tumblermechanism. The casingorV fra-me ofthe door is provided with a'strikeplate having a part which may be moved to release the latch. bolt by theactuation of an appropriate key called an emergency key that voperatesan auxiliary or emergency lock as sociated iwith lthe door frame andcontrolling the `movablepafrt of the strike. When the door is locked,the possessor of the einen gency key may readily open it by drawing backthe movable strike member' out of co! operation-Withthe 4latch bolt soas to gain access to the room in case o-f emergency or accident; andwhen the movable part of the strike is again returned to its normallocking position, the lock on the door will act in the usual way. All ofthe features spokenof above are not essential parts of my invention,bvut;they are mentioned to facilitate an understanding of the followingVdescription ofthe particular constructionl illustrated.

AReferring to the drawings, A denotes the door, B the door frame -orcasing, C the lock on the ,door,`D the strike on the casing, E theauxiliary` or emergency lock associated ,with the casing, and F themovable partof the .strike lDfadapted to be shiftedfbyv said auxiliaryor emergency lock. 'The lock C has a latch bolt 2O adapted to beretracted by la .series of keys fitted to a pin tumbler cylinder lock 21mounted in the usual mannenat the outer face of the door. In thekparticular form shown, the lock C is provided with the usual liveinside knob 2Q (Figf) for retracting thelatch bolt, and

the knob 23 at the outside of the door is a fixed or dummy knob, theretraction of the bolt fromthe outside being conined to the cylinderlock mechanism. The knobs 22, 23

are .used in connection with the customary two-part spindle (not shown),the inner sectionof which engages a hub 2a, that is adapted to retractthe latch bolt 20 by means .of the `usual retracting yoke or shoe 25.The

other outer.) hub 26 is permanently engaged by a lug 27 on the lockcase, which prevents the rotation of the outer knob, although 'this `isnot a material feature of the invention.

The cylinder lock 2l is provided with the customary roll-back 28(indicated in dotted lines `in Fig. 2)-byv means of whichthe :latch boltmay be retracted through the retracting rlever 29, 30 of Well-knownform.

VLocated in a suitable notch 3l in the stud 32 of the door lframe is aU-shaped bracket 33 secured to the stud by screws 34. This bracket formsa support or mounting for the Yauxiliary lock E, which is fitted withinthe abl-y .extends @completely vacross the notch in .the..stud, as shownin Fig. 3, and which serves as a moimting for the movable member ,F of.theistrike. Preferably, the mem- Uber F 'isof the pivoted type, beingpivoted or `swiveled tothe plate by means of a pivot pin 3G at a pointbelow the auxiliary lock E. rl`he lock E is provided with a bolt 37which carries a depending pin 38 extending out of the lock case, througha slot 39 in the bottom thereof, and engaging an opening or socket inthe movable strike member. the arrangement being such that when the bolt37 is in the position shown in Fig. S, the movable strike member F willoccupy the position shown in Fig. 3, whereas when the bolt. 37 `isshifted to the right with respect to Fig. 8, the member F will be swungto the position shown in Fig. 6. ln this last position, the movablestrike member is shifted out of the path of the latch bolt, so that thedoor may be freely opened. rl`he bolt 37 of the emergency lock fl isactuated by a key 4.0, termed the emergency key. In the form shown, the.auxiliary lock is inelosed by the casing members applied to the stud Theouter casing member is shown at all, the inner casing member at l2, andthe intermediate casing member at 413, said last named casing memberbeing provided with the yusual stop bead a4. A keyhole l5 for theauxiliary lock passes through the outer casing member al, and preferablya small escutcheon a6 will be applied to said easing member around thekeyhole. lVhen the emergency key l0 is inserted. through the keyhole andturned in the proper direction, .it releases a plurality of tumblcrs 47from engagement. with the stem or fence t8 on the bolt 3T and retractssaid bolt` thereby withdrawing the movable part of the strike. The boltis normally held in its forward position corresponding to the lockingposition of the strike member l? by means ol' a springI a9. As the boltis retracted, the stump or fence passes into notches 50 of the tumblergatings, and immediately upon the release of the key the bolt willspring forward to its initial position` thereby returning the member l?to the operative or locking position. llhe emergency key l() isl'ne'l'erably of the drill pin type. and the key bit is prevented frommaking a full rotation in the keyhole by abutting a shoulder 5l on thebolt, so that the key cannot be turned to a position in which the boltis jammed back in position to release the movable strike member.

The strike D is for the most part of eus- .tomary form, except that itis cut-away al' llU the fixed part of the strike." The opening 54: whichyis formed by the fixed and movable members respectively of the strikeis adapted to receive the latch bolt 20, as shown in ]3`ig.2.-v t

Referring now to' the electrically con-V4 trolled shut-out mechanism,the construe# tion may be substantiallyjas follows: A dcadlocking orclogging lever 55 is pivoted on a post 56 in the easeof lock C, with oneend 57 adapted to extend back of the head of the latch bolt 20, so as todog the latter against retraction. A spring 58 normally holds the lever55 in dogging position sotthat the latch bolt cannot be retracted. Acontroller bolt 59 projects out of the lock frontadjacent the latch boltso as to extend intethe opening 54. In the present instance, thecontroller `bolt is located above the ylatch bolt. Its shank '60 carriesa pin 61 adapted to engage a shouldered portion 63 on lever 55 in such amanner that when the controller bolt is pushed back into'the case tol acertain extent, ashereinafter described, it will shift the dogging lever55 to release the latch bolt, as shown in Fig. 2., springt/l. normallyprotracts the controller bolt 59 to about the same extentas the latchbolt.` Suitable provision is made for retractingthe controller bolt fromthe strike opening 5% when the latch bolt is retracted, and in theparticular form` shown, the controller bolt head carries a pin 65, whichengages a groove 66 in the latch bolt head in such a manner as toaccomplish thiscpurpose.

It will be understood that by' theconstruction described, the latchboltnormally will be dogged by means of the clogging device 55 when thedooris open. The controller bolt 59 enables the latch bolt 'to beretracted las the door s being clo"sed,so that it may then shootoutaga-inl into .the opening 54 of the strike to lock the doorin `the usualmanner. It will be understood,` tof course, that if such a contingencywere not provided against, the dogged latch bolt would not pass themovable part F of the strike, `but by furnishing the controller bolt 59with a curved siirface`G7,'\vl1ich contacts with the strike on theclosing of? the door before the latch `bolt 20 makes contact .with thestrike, the controller bolt will be pressed in prior' to the latch bolt,so that the pin or projection G1 will shift the lever`55 out of cloggingposition, and thus permit the'latch bolt to move backint'o the case,1and then spring outward. in the usual manner under the influence yof itsspring. i

In order that the latch bolt may never be doggediagainst retractionpfrom:the inside ofthe room, suitable provision is made for shifting theclogging device out yofitsoper- 4ative position as the inner knob 22 ismanipulated. In they embodiment shown,- the yoke 25 is provided withashoulder 25a'coacting` with a notched portion 55a onthe` lever 55 insuclra mann'erthatthe forward end of the lever ivillbe moved out of thepath ofthe latch boltasl` the yokeis rctracted by the innerhubQllbeforethe bolt head can engage the ldogging lever. t

'As the dooris closed, `the controller bolt 59 after being pressedback'byengagement with the strike is `prevented from full protraction`by suitable` means so that,l under normal circumstances, it-will'holdthe dogging 4lever in the inoperative position, and thus permit' freeretraction of the latchV bolt from the outside of the door by means ofthe keys adapted to the cylinder `lock 21. The means employedfor"blockin`g a full excursion of the controller boltV is'preferablyunder electrical control, and so constructed and arranged that oncompleting -an elec-` tric circuit by pressing a button located in thehotel oliice (or otherwise), the controller bolt 59 will be permitted toshoot forward and therebycausey the 'clogging of the latch bolt byspring y58v acting on lever 55,so that the keys adapted to the cylinderlock will be inoperative. In the particular form shown, the`controller"59 ,cooperates with a 'plunger GSYmounted in the movablepart F of the strike I and controlled' by a suitable `electromagnet.Preferably, the 'plunger 68'1has a headguided in 'anopening of the flatup right part 53 oppo'sitethe controller The plunger GS'has a 4sternj69guided in a bracket 7 Oprojecting up from the base of themovable memberF. The'stein 6`9is surrounded by a spring 7l which lis considerablylighter than the spring 64 acting `on the controller bolt. A flange 72on the rear of the plunger' head'is adapted to abut against the part 53of the strike so asto' limit the outward move# ment of thelplunger inits opening. An electromagnetG is mounted on the base of mem-` `beijFand connected by suitable wiringiwith the office ofthe hotel..v Thiselectromagnet hasan armature which may take the form i of a swingingflap 73. The fiapslike armature '73 is swiveled at its lower part byscrews 74C "so yasy to'swing in a` vertical plane toward andn awayv fromthe poles ofthe mag net, which are "preferably two in number. A spring 75 normally presses'the armature away from themagnet poles, and in thisposition its freeupper end engages behind the collar or flange 752yofthe plungerv 68, as shown in Fig. 3, so as to `lock the plunger in itsfully.protractedposition'with respect to the movable strike' memberfWhen ythe electromagnet Gfi's energizedby closing the circuit, thearinature'is pulled back against the magnet poles, and fthe plunger 68is thus released for repression `byl thecontroller l59, as' hereinafterdescribed. n l y The normal position of the parts when the door isclosed is shown in` Fig. 2d As the door closes, the 'controllermakesmontact les llt'

with the strike insuch a. manner as to release out intothe ,strikein theusual manner, as previously described. `The. controller b olt7 however,cannotl shoott outftofits lfully pro- -tracted position inthe strikeopening 54,

becauseyitds .blocked by ,the plunger 68, which .is ordinarily', heldVin itsfully protracted .position by the armature 73 of. theelectromagnet the controller bolt partiallyv pushed .into .the .lock.case byV the plungenS, the dogging lever p is .held in the .of .pos`ition by, the plunger 6l `on the controller, -bolt lshank Se that. theq.latch bolt can be*4 retraotedLby a key insertedfin ,the cylinder. locky. rom the] outside ,rby the knob 22 on w theins'ide As theflatch isretracted, to open .the door,.',the end of the groove 66 the latch l.bolt head ymakes contactwiththepm l.on the controller bolt head .atsucha .timegthat the controller :bolt Willbe retracted substantiallysimultaneously with the latchbolt so that thestrike will befulflycleared :by .the controller bolt as, Well as the( latchboltto-,permit the Iopening of the `door. l

r-lheroom occupant can lock the door by merely closing thesame, ,theouter knob being permanently doggedagainst rotation, andaccess from theoutside`,being.conined to the keys. vIf valuablegood's are stored ,inythe room, vand .the occupant on .leavingfit Wishes to have the.doorlocked against the maidskey and duplicate `guest keys, the hotelclerk, will, on requesuactuate the electrical shut-.outfmechanism fromthe oiiice by energizing, the electromagnet, G. As the magnet .isenergized, .and the armature., 73 isfattracted by themagnet poles, .theplunger 68 is released bythe armature and the'heavy springl 64 of thecontroller bolt immediately .pushessaid/bolt outward to the full extent,.overcoming the vveak springlpn ,the plunger, so that the .spring-58Will't'henbe caused to shift the lever 55 tinto dogging position. Thelkeys adapted to the .cylinder lock yWill then vbe inoperative to openthe .door,because 1theyare ineffective to shift .the dogging leveroutfoffthe pathof lthelatch bolt. However, access .to the roomjcan stillbe had. by means offthe len iergency key'.v On inserting the .emergencykey .40 into. Vthekeyhole l5 and vturning-it in. aproper direction in.the auX- iliary lock E, thestrike .member F Will .be shifted inithemanner previously described, sonas` to clear kthe latch .bolt andcontroller boltand permit vthe door to .be. .imn 1edia`tely opened byrushing .01' Peilingen the @Same- -'SupposiugfthatJthe .shutfout deviceis m1,

60 asshovvn injFig. 5, theWithdrawal of the strike., member F will,permit .the plunger 68 to shoot out again -tolits ullyprotraeted.n.OStOn, .as ShQWn fillflig-f .wherein it is locked bythe:armatureflavhich ,is pressed has been opened and pressure on theemergency key is released, the movable strike memberF Will shift back tothe normal position, shown in Fig. 3, under the influence of the spring49 acting on bolt 37 of the emergency lock, and then when the door isclosed again, it .will lock automatically in the manner ,previouslydescribed.

It will be understood, therefore, that the shut-out device and theemergency release mechanism may be actuated in a very easy andconvenient manner. It will be understood, furthermore, that by providingthe describedshut-'out ldevice and emergency release" mechanism on the.door frame, the tumbler mechanism of the cylinder lock may bepf thesimplest form owing to the relatively small number of keys used inconnection with said lock.

A 4I 4.do not limit myself to a lock construction in lv vhich lthe boltof the lock on the door is -a latch bolt rather than a dead bolt, nor tothe particular mechanism for dogging the lock bolt, Vnor to theparticular mechanism for controlling the clogging device from the doorframe by an electromagnet or the like, as various changes in the detailsof these features may be adopted without departing from the scope of theinvention as defined in lthe claims.

`I' donot claim broadly herein the combination with a door and doorframe, of a lock on .thedoor having a case and a bolt therein, a kytoretractsaid bolt, means including an auxiliary bolt fordogging saidiirst bolt against retraction by said key, and a con- .trdlling memberYfor said clogging meehanism located on the door fram, and adapted tolcoperate with said auxiliary bolt, as claimed vin my application SerialNo. 2912. VWhat I claim is l. The combination with a door and doorframe, of a bolt on the door for locking the latter to said frame, andan electrical shutout device on the door frame coperating with said boltto lock the door; substantially as; described.

2.'.The combination With a door and door frame, cfa lock on the doorhaving a bolt, astrike on the door frame to receive said .bolt and anelectromagnetic shut-out device Ionthedoor frame coperating with saidbolt tov lock the door; substantially as described. 3. .The combinationWith a door and .door frame, of a lock onthe door, a key-actuated.emergency .lock on .the door frame, and an .electromagnetic shut-outdevice for said first lock associated with said :second lock;substantially `as described.

4. Theycombinationwith a door and door frame, of a lock on the door,emergency release mechanism forsaid lock mounted 4 on the frame;substantially as described.

L27/once lock, an electromagnetic shut-out device on the door frame, andan emergency release mechanism for said lock on the door frame;substantially as described.

G. The combination With a door and door trame, of a lock on the door forsecuring the latter to said frame, a key for said lock, an emergencyrelease mechanism for said lock mounted on the door frame, andanelectromagneticshut-out device which will prevent release of said doorby said key but not by said emergency release mechanism; substantiallyas described.

7. In a lock, a bolt, a key for actuating Vsaid bolt, an emergencyrelease mechanism for said lock, and an electromagnetic shutout devicewhich prevents the release of the door by said key but not by saidemergency release mechanism; lsubstantially as described.

8. In a lock, the combination oit a bolt, a key for operating said bolt,an electrical shut-out device for preventing the operation of said boltby said key, a second key, and means operative by said second key forreleasing the door when said shut-out device has been actuated;substantially as described.

9. The combination with a door and door trame, of a lock on thedoorhaving a bolt, a movable key controlled strike member on the doorframe coiperating With said bolt, and an electromagnetic shutout devicemounted on said strike member; substantially as described.

10..An emergency attachment for locks, comprising a movable strikemembeigmeans for moving the same, and an electromagnetic shut-out devicemounted on said strike member; substantially as described.

11. An emergency `attachment for locks, comprising a movable strikemember, means for-moving the same, a plunger carried by said strikemember, and electromagnetic means :tor controlling the plunger;substantially as described.

l2. In a lock, a bolt, a` key for operating said bolt from the outsideet' the room, means for operating said bolt from the inside of the room,and an electro-magnetic shut-out device for preventing the operation oi'said bolt by said key, While permitting the operation of said bolt bysaid inside operating means; substantially as described.

13. In a lock, the combination of a bolt, a key for operating the samefrom the outside of the room, a knob for operating said bolt from theinside of the room, and an electromagnetic shut-out device n'iounted onthe door frame for preventing the operation of said bolt by said keyWithout interfering with the operation thereof by said knob;substantially as described.

14. In a lock, a latch bolt, pin tumbler mechanism i'or retracting thesame from the outside of the door, a knob for retracting said bolt fromthe inside of the door, and

an electromagnetic shut-out device on the door ira-me for preventing theretraction of said bolt by said pin tumbler mechanism the bolt-by saidknob; substantiallyasdescribed. f i

15. The combination with a door and door frame., oit a lock on the doorhaving a bolt, a key for actuating said bolt, means in said lock fordogging said bolt in itsprotracted position so that the key cannotretract `the same, and electromagnetic means on the door trame forcontrolling said doggingme'ans; substantially as described. 1G. Thecombination With a door and" door frame, of a lock on the door havingabolta key `for actuating said bolt, means in said lock for cloggingsaid bolt against retraction bysaid key, a projecting controller boltfor controlling said doggingmeans, and an electromagnetically operateddevice coperating With said controller bolt; substantially as`described. i

17. In a lock, a bolt on the door, a change key for operating said bolt,an electromagnetic shut-out device7 and an emergencyre- `lease`mechanism on the door frame` for opening' the door when said shut-outdevice has been actuated; substantially as described.

18. In a lock, a bolt, means normally dogging said bolt, and meansforreleasing said dogging means during the closing movement oi the door,and after the doorhas linally closed; substantially as described.

19. In a. lock, the combination oli a bolt, means for dogging said boltWhen the door is open, means for releasing said bolt during the closingof the door, and atterthe door has closed, and means for refdogging thebolt; substantially as described. f I 20. In a lock, a latch bolt,meansfordog ging the same While the door is open, means vfor releasingthe bolt during the closing movement of the door, and after the door hasclosed, and electrically controlled means for re-dogging the bolt;scribed. i

2l. In a lock, a latch bolt, a key for retracting said bolt from theoutside of. the door, means for clogging said bolt against retraction bysaid key when the door is open, means for releasing the bolt While thedoor is being closed, and after it has been closed, so that the door canbe opened by the key, and electrically controlled means for redoggingthe bolt so that the door cannot be opened by said key; substantially asdescribed.

22. In a lock, a bolt, a device tending to dog the bolt againstretraction, a key for retracting the bolt when released from saidsubstantially as dei.

23. In a lock, a latch bolt, means normally Vdoggingthe same, means forreleasing the ydoggingmeans,.vvhen the door is closed, and

electrically controlled means for rendering said releasing meansinoperative; substanltially as. described.

ver

j 24,-. I na lock, `a latch bolt, a key for retractingthesame,y a devicetending to dog saidgbolt against retraction by said key, a ycontrollerfor said last-named means, and an electrically ope-rated devicecoperating With said controller; substantially as described. f

25. In a lock, a. bolt, a strike member on 1the d'oorframe cooperating`therewith, a key for retracting said bolt fromthe outsidcot thev door,la, device for dogging said bolt against retraction by said key, acontroller forP said dogging; device, and anelectromagneticallycontrolled member mounted on the strike member to coperate with saidcontroller; ysubstantially as described.

*Y 26;. 'The combination with a. door and door frame, of. a lock on thedoor having a bolt, a 'strike member on the frame cooperatingWithsa-idibolt, a key for operating said bolt, a device? for' (loggingthe lbolt against retraction. by said key, and means includinganaelectromagnet on the 'door frame for controlling the operationy ofsaid clogging means; substantially as described.

27. The combinationwith a door and door frame, of alock onI the door, aykey to operatesaid lock, any electromagnetically controlled device forpreventingthe operation of saidA lock by'saidV key, and emergencyreleaseiln'eans for releasing the door when said preventing meansisoperative; substantially as-described.- I

28. The 'combination with a door and door frame, of a lock on the door,a key to` operate-.said lock, andan electromagnetically con.- trolledshut-out device on the door frame for preventing'the operation of saidlock by said key; substantially as described.

' 29. Thecombination with a door anddoor frame, of a lock-on the door, akeyfor operating said lock, any electromagnetically con- Gopieaof thispatent may be obtained forv trolled shut-out device for said lock, andemergency release mechanism mounted on the door frame; substantially asdescribed.

30. Thecolnbination With a door and door frame, of a lock on the doorhaving a bolt, a key to operate said bolt, a strike on the door :trameto receive said bolt, and an electromagnetically controlled shut-ontdevice for preventing the Withdrawal of said bolt from said strike bysaid key; substantially as described.

3l. The combination with a door and door frame, of a bolt on the doorfor locking saiddoor to said frame, a key for actuating said bolt fromthe outside of the door, a knob4 for actuating said bolt from the insideof the door, and an electromagnetically controlled shut-out device Whichprevents the retraction of said bolt by said key but not by said knob;substantially as described.

32. Thecombination With a door and door frame, of a bolt on the door forlocking the door to the frame, a key for reti-acting said bolt from theoutside of the door, a knob for retracting said bolt from the inside 0fthe door, an electromagnetically controlled shut-out device Whichprevents the retraction of said bolt by said key but not by said knob,an emergency release mechanism for said lock which will release the doorwhen said shut-out device has been operated, and a key to operate saideinergency release mechanism; substantially as described.

33. The combination With a door lock and a key therefor, of anelectromagnetically controlled shut-ont device for preventing theoperation of said' lock by said key.

v34C. The combination with a door and door frame, ofa lock on the doorhaving a bolt, a keeper on the door frame to receive said bolt, a keyfor operating said bolt, and an electrically controlled shut-ont deviceon the door frame coperating with said lock to prevent the Withdrawal ofsaid bolt by said key when it has been protracted.

35. The combination with a lock and a key therefor, ofdistancecontrolled means for preventing the operation of said lock by said key.

In Witness whereof, I have hereunto set my handon the 8th day of Dec.,1915.

HENRY G. VOIGHT.

ve cents each, by addressing'the Commissioner of Iatents, Washington, D.C.

